The wikipedia article says that if a GRB were a spherical release of energy, they would be on the same order. However, GRB's are highly anisotropic; most of the

The wikipedia article says that if a GRB were a spherical release of energy, they would be on the same order. However, GRB's are highly anisotropic; most of the energy is expelled in a smaller cone. One of the estimates on the page is that a typical GRB expels 1/2000th a solar mass of energy. So these gravity events are thousands of times more powerful. These scales are incomprehensible, at least to me.